While no one reading this post is likely to see this kind of damage, it's interesting to imagine what today's cities would look like in such a radically different world -- but the scale is so vast that it's hard to fathom. The following is a simple visualization of the landscapes of twelve major coastal cities around the world in three imagined futures: red overlays represent areas that will be submerged after a 50 foot (15.2 m) sea level rise; orange overlays represent areas submerged after a 150 foot (45.7 m) rise; and yellow overlays represent areas submerged after a full 250 foot (76.2 m) rise. The colors represent the fire-like spread of the ocean inland. Take these pictures for what you will; they are what they are.
While many of the cities represented were included for their global importance today, the visual impact of the colored overlays played a big part in determining what cities made the list. The numbers below each square image describe the approximate length of one side in miles/kilometers.
Rio De Janeiro, Brazil
Abidjan, Côte d'Ivoire
London, Great Britain
Hong Kong, China
Pyongyang, North Korea
The images above were created using Google Maps and a filter from Hey What's That dot com.
World Urbanism Day (Wikipedia)
HeyWhatsThat.com (EDIT: I found a direct link to the tool that I used.)